Fitness device



FIG. 1 is a perspective front view of a fitness device showing my new design;

FIG. 2 is a perspective rear view thereof;

FIG. 3 is a perspective left side view thereof;

FIG. 4 is a perspective right side view thereof; and,

FIG. 5 is an enlarged perspective view of the control panel portion of the fitness device, shown separately for ease of illustration. 

The ornamental design for a fitness device, as shown. 